Swegon DETECT IAQ a User manual

DETECT IAQ a
Instructions for Use 20220705
The document was originally written in Swedish
Symbol explanation
Symbols on the machine.
This product complies with applicable EU
directives.
Symbols in this user manual
Warning/Caution!
Application area
DETECT IAQ is a controller that has been designed to
detect, check, measure and control carbon dioxide accu-
mulations and temperature in room areas or ventilation
ducts.
The product may not be used for anything other than its
intended use.
General
Read through the entire instructions for use before
you install/use the product and save the instruc-
tions for future reference. It’s not permissible to
make changes or modifications to this product
other than those specified in this document.
Protective equipment
Always use appropriate personal protective equip-
ment for the work in question, in the form of gloves,
respirators and protective glasses during handling,
installation, cleaning and service/maintenance.
Electrical safety
Permitted voltage, see “Electrical data”. It is not
permissible to insert foreign objects into the product’s
contactor connections or the electronics's ventilation
openings; risk for short circuiting.
24 V isolation transformer to be connected should comply
with the provisions of IEC 61558-1.
Cable sizing must be carried out for cabling between the
product and the power supply source.
Disconnect the power supply when working on products
that are not required to run in production.
Always follow the local/national rules for who shall be
permitted to carry out this type of electrical installation.
Handling
• The product must be handled with care.
Installation
• Moist, cold and aggressive environments must be
avoided.
• Avoid installing the product near a heat source.
• Assemble the product according to applicable industry
regulations.
• Install the product for easy access during service/
maintenance.
• If the product is mounted above a fixed ceiling, the
inspection hatch must be located so that the product is
accessible for inspection.
• Check to make sure that the product doesn’t have any
visible defects.
• Check that the product is properly secured after it has
been installed.
• Check that all cables are properly secured in place after
installation.

DETECT IAQ
2Swegon reserves the right to alter specications. 20220705
Installation
DETECT IAQ should ideally be mounted between 1.5
to 1.8 m above the floor on the surface of a wall using
screws, see figure 1.
The installation position needs to be selected with care to
eliminate fault factors that can affect the measurement.
The sensor should not be exposed to sunlight, draughts or
temperature differences caused by external walls.
DETECT IAQ Da CO2-TEMP-MB is installed in a ventilation
duct.
Figure 1. Recommended installation in a room or duct.
1,5-1,8 m
DETECT IAQ Da CO
2-TEMP-MB
DETECT IAQa CO2-TEMP-MB
DETECT IAQ OCSa CO2-TEMP-MB
Figure2. Dimensions, DETECT IAQa CO2-TEMP-MB and
DETECT IAQ OCSa CO2-TEMP-MB.
87 mm
86 mm
< 33 mm
Figure 3. Dimensions, DETECT IAQ Da CO2-TEMP-MB.
46 mm
106 mm
111 mm / Ø 10 mm
102 mm
Dimensions
0 m
6 m
6 m
5 m
35°
35°
10,8 m
Vertical
0
m
2
m
2 m
5 m
1,8 m
Coverage for PIR detection in
DETECT IAQ OCSa CO2-TEMP-MB
Horizontal

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20220705 Swegon reserves the right to alter specications.
DETECT IAQ
Figure 5. Connection of DETECT IAQa TOOL to DETECT IAQa
CO2-TEMP-MB and DETECT IAQ OCSa CO2-TEMP-MB. Note: For
connection to DETECT IAQ OCSa CO2-TEMP-MB, remove the
circuit board for the occupancy sensor.
Figure 6. Connection of DETECT IAQa TOOL to DETECT IAQ Da
CO2-TEMP-MB.
G
G0
Y1
Y2
Y3
Y4
A+
B-
NO
NC
COM
PWR
RX
TX
REL
BUS
TERM
Connections
G
G0
Y1
Y2
Y3
Y4
A+
B-
NO
NC
COM
24 Vac/dc
0 Vac
0... 10 V, Co20-2000ppm
0... 10 V, temperature, 0-50 °C
0... 10 V, controller output 700ppm, 22°C
G0
Modbus, RS-485
Figure4. Connection.
Note: The CO2measurement causes a current peak for
the power supply voltage. This can result in faults in the
analogue output signal when using long and thin cables.
It is recommended to increase the cable cross-section
when using long cables (for example by using more
strands) to guarantee a reliable measurement signal.
Calibration
ABCLogic™ (Automatic Background Calibration Logic) is a
patent-protected technology for self-calibration. The ABC-
Logic™ method eliminates possible long-term drift. The
ABCLogic™ method can be used when the CO2content
falls at least twice within a week, to a level of approx. 400
ppm. For this reason, ABCLogic™ is effective in areas that
are not in constant use.
ABCLogic™ can be disabled in areas that are used con-
tinuously with the aid of DETECT IAQa TOOL. If the
ABCLogic™ method is not used, the device should be
calibrated at 6-12 month intervals.
The recommended calibration interval is 5 years, even
when using ABCLogic™.
DETECT IAQa TOOL
Using DETECT IAQa TOOL, it is possible to change the
product’s settings, such as the controller and Modbus
settings.
Connection to DETECT IAQa TOOL
1. Open the lid.
2. Connect the cable for DETECT IAQa TOOL to the
connector, see figures 5 and 6 below.
Connection
Connection with
DETECT IAQa TOOL
cable

DETECT IAQ
4Swegon reserves the right to alter specications. 20220705
OK
M
M
M
OK OK OK OK
OK
M
OK
+/-
+/-
+/-
OK OK
OK OK OK OK OK
OK
+/-
+/-
OK OK OK OK OK
OK
+/-
OK OK OK OK OK
OK
OK OK
M
OK OK
OK
OK
M
OK OK OK OK
OK
OK
+/-
OK
900
ppm
COMMUNICATIONS
1
MODBUS ID
19.2
Baud rate (k)
E
Parity
CALIBRATION Offset: CO2ppm
0On
ABC-logic
0.0
Offset: °C
OUTPUT
0-10V
Y1-Y4 range
Direct
Output mode Fixed output
OFF
100%
Fixed output
12h
Deactivation
PIR SENSOR
Enabled
PIR-Control
3
Act.delay (m)
15
Deact.delay (m)
CONTROLLER
Cont
OFF
Cont
CO2
PI
Control mode
300
Integr. time s
700
CO2 Setpoint
500
CO2 Propor. band
P
Control mode
Cont PI
TEMPERATURE Control mode
300
Integr. time s
22.0
°C Setpoint
2.0
°C Propor. band
P
Control mode
Cont
MAXIMUM CTRL
PI
Control mode
300
Integr. time s
P
Control mode
700
CO2 Setpoint
500
CO2 Propor. band
22.0
°C Setpoint
2.0
°C Propor. band
M
OK OK
5 s
OK
INFO
1.0.0
VERSION
no
RESET?
Measurement
Modbus menu
Calibration menu
Output menu
PIR menu*
Controller menu
Info menu
*DETECT IAQ OCSa CO2-TEMP-MB
DETECT IAQa TOOL menu
The menu is opened by pressing the M-button on
DETECT IAQa TOOL. Change the values using the “+” and
“-” buttons. Note that the menu is specific for each unit
and that the content is dependent on the unit and the
installed options.
The following menu structure contains the factory settings.

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20220705 Swegon reserves the right to alter specications.
DETECT IAQ
Communications menu
The menu is used to change the Modbus settings.
M
OK OK OK OK
COMMUNICATIONS
1
MODBUS ID
19.2
Baud rate (k) Parity
E
Calibration menu
The Calibration menu can be used to adjust all the values.
• Adjusting the CO2value is performed in steps of 10 ppm.
• Adjusting the temperature value is performed in steps of
0.1°C.
The DETECT IAQa TOOL tool’s display shows how much the
relevant value has been adjusted.
Note: The adjustment value for CO2is not reset when the
ABCLogic calibration is turned on or off.
OK
M
OK OK OK
CALIBRATION Offset: CO2ppm
0On
ABC-logic
0.0
Offset: °C
Modbus address
[OFF / 1…247]
Modbus speed (kbit/s)
[9.6 / 19.2 / 38.4 / 56.0 / 57.6
/ 76.8 /115.2]
Parity bit [N/E/O]
[None/Even/Odd]
Adjustment of CO2value
[±200 ppm]
Automatic calibration function
[On/Off]
Adjusting the temperature value
[±3.0°C]

DETECT IAQ
6Swegon reserves the right to alter specications. 20220705
Output signal
Output scaling for all outputs and the direction of the
controller’s output (Y4) can be changed with the aid of
the output menu. The controller’s fixed output signal
value and the output signal’s length can also be selected
with the menu.
M
OK OK OK OK
OK
+/-
OK
OUTPUT
0-10V
Y1-Y4 range
Direct
Output mode Fixed output
OFF
100%
Fixed output
12h
Deactivation
PIR menu
The PIR menu is available to DETECT IAQ OCSa CO2-
TEMP-MB.
When the PIR Control parameter is enabled, the control-
ler’s output signal works if occupancy is detected. If no
occupancy is detected, the controller’s output signal is
0%.
You can also adjust the delay for PIR activation and deac-
tivation using the menu.
M
OK OK OK OK
PIR SENSOR
Enabled
PIR-Control
3
Act.delay (m)
15
Deact.delay (m)
Output scaling
[0-10 V / 2-10 V / 0-5 V]
Selection of control output
[Direct/Reversed]
Fixed output
[100 / 75 / 50 / 25 / 0%]
Deactivation timer for fixed output
[Off / 6 / 12 / 24 h]
PIR control
[Enabled/Disabled]
Activation delay
[0 / 3 / 6 min]
Deactivation delay
[5 / 15 / 30 / 60 / 90 / 120 min]

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20220705 Swegon reserves the right to alter specications.
DETECT IAQ
Controller menu
It is possible to regulate the output signal control, either
according to a measurement value or according to a
maximum number of values.
• Adjusting the CO2values is performed in steps of 10 ppm.
• Adjusting the temperature values is performed in steps of
0.1°C.
M
OK
+/-
+/-
+/-
OK OK OK OK OK
OK
+/-
+/-
OK OK OK OK OK
OK
+/-
OK OK OK OK OK
OK
OK OK
OK
CONTROLLER
Cont
OFF
Cont
CO2
PI
Control mode
300
Integr. time s
700
CO2 Setpoint
500
CO2 Propor. band
P
Control mode
Cont PI
TEMPERATURE Control mode
300
Integr. time s
22.0
°C Setpoint
2.0
°C Propor. band
P
Control mode
Cont
MAXIMUM CTRL
PI
Control mode
300
Integr. time s
P
Control mode
700
CO2 Setpoint
500
CO2 Propor. band
22.0
°C Setpoint
2.0
°C Propor. band
In the maximum option regulation, the controller’s output
signal is formed according to the dimensions that cause the
largest value for the controller’s output signal. For example:
• The carbon dioxide concentration is 800 ppm.
• The temperature is 22.5°C.
Control output [V]Control output [V]
Co2Setpoint
e.g. 700 ppm
°C Setpoint
e.g. 22.0 °C
Co2[ppm] TE [°C]
800 ppm 22.5 °C
CO2= 6 V
Temperature = 3 V Control output = 6 V
Control method
[PI / P]
Control method
[PI / P]
Control method
[PI / P]
Integration time
[50...5000 s]
Integration time
[50...5000 s]
Integration time
[50...5000 s]
CO2set point
[400...10000 ppm]
CO2set point
[400...10000 ppm]
°C set point
[18...26°C]
°C set point
[18...26°C]
Proportional band for CO2
[100...10000]
Proportional band for CO2
[100...10000]
Proportional band for °C
[1.0...32.0]
Proportional band for °C
[1.0...32.0]

DETECT IAQ
8Swegon reserves the right to alter specications. 20220705
Information menu
The menu is used to check the unit’s software version and
to reset the unit’s factory settings.
M
OK OK
5 s
OK
INFO
1.0.0
VERSION
no
RESET?
Software version Restoring the factory settings
[Yes / No]
Modbus
Modbus properties
Protocol RS-485 Modbus RTU
Modbus speed 9600/19200/38400/56000/57600/76000/115200 bps
Data bits 8
Parity none/odd/even
Stop bits 1
Network size up to 128 units per segment
The parameter memory’s service life allows at least 1 million write cycles.
Termination of Modbus
Modbus is terminated through the placement of an MBUS
TERM jumper, see figures 7 and 8 below.
Figure 7. Termination of Modbus in DETECT IAQa CO2-TEMP-MB
and DETECT IAQ OCSa CO2-TEMP-MB.
Figure 8. Termination of Modbus in DETECT IAQ Da CO2-TEMP-
MB.
G
G0
Y1
Y2
Y3
Y4
A+
B-
NO
NC
COM
PWR
RX
TX
REL
BUS
TERM
MBUS TERM jumper

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20220705 Swegon reserves the right to alter specications.
DETECT IAQ
Function codes for Modbus
The product supports the following function codes for
Modbus.
0x01 Read coils
0x02 Read discrete inputs
0x03 Read holding registers
0x04 Read input registers
0x05 Write single coil
0x06 Write single register
0x0F Write multiple coils
0x10 Write multiple registers
0x17 Read/write multiple registers
Modbus register
Note: If a parameter value is entered that exceeds the
range for the parameter values, the value will be replaced
with the nearest acceptable value.
For example: If 270 is entered in register 40011, the value
will be replaced with 260.
Coils
Register Parameter description Data type Values Range Default
1Y1 output overdrive activation Bit 0 - 1 0: OFF, 1: ON 0
2Y2 output overdrive activation Bit 0 - 1 0: OFF, 1: ON 0
3Y3 output overdrive activation Bit 0 - 1 0: OFF, 1: ON 0
4Y4 output overdrive activation Bit 0 - 1 0: OFF, 1: ON 0
7Controller output direction Bit 0 - 1 0: Direct
1: Reversed
0
8*PIR controller Bit 0 - 1 0: PIR controller off
1: PIR controller on
1
*DETECT IAQ OCSa CO2-TEMP-MB
Discrete inputs
Register Parameter description Data type Values Range
10002*PIR sensor state (immediate) Bit 0 - 1 0: No detection
1: Detection
10003*PIR sensor state (control) Bit 0 - 1 0: OFF, 1: ON
*DETECT IAQ OCSa CO2-TEMP-MB
Input registers
Register Parameter description Data type Values Range
30001 CO2measurement Signed 16 400…10000 400…10000 ppm
30002 Temperature measurement Signed 16 0…500 0.0…50.0°C
30004 Y1 output voltage Unsigned 16 0…1000 0.00…10.00 V
30005 Y2 output voltage Unsigned 16 0…1000 0.00…10.00 V
30006 Y3 output voltage Unsigned 16 0…1000 0.00…10.00 V
30007 Y4 output voltage Unsigned 16 0…1000 0.00…10.00 V

DETECT IAQ
10 Swegon reserves the right to alter specications. 20220705
Holding registers
Register Parameter description Data type Values Range Default
40001 Y1 output overdrive Signed 16 0…1000 0…10.0 0 V 0
40002 Y2 output overdrive Signed 16 0…1000 0…10.0 0 V 0
40003 Y3 output overdrive Signed 16 0…1000 0…10.0 0 V 0
40004 Y4 output overdrive Signed 16 0…1000 0…10.0 0 V 0
40005 CO2measurement tuning (offset) Signed 16 -200…200 -200…200 ppm 0
40006 Temperature measurement tuning (offset) Signed 16 -30…30 -3.0…3.0°C 0
40008 Control method Signed 16 0 - 1 0: P
1: PI
1
40009 Controller output Signed 16 0 - 1 - 2 - 3 - 4 0: OFF
1: CO2
2: TEMPERATURE
4: MAXIMUM CTRL
4
40010 Set point, CO2Signed 16 400…10000 400…10000 ppm 700
40 011 Set point, temperature Signed 16 180…260 18.0…26.0°C 210
40013 Proportional band, CO2Signed 16 100…10000 100…10000 ppm 500
40014 Proportional band, temperature Signed 16 10…320 1.0…32.0°C 20
40016 Integration time Signed 16 50…5000 50…5000 s 300
40035*PIR activation delay Signed 16 0 - 1 - 2 0: 0 min
1: 3 min
2: 6 min
1
40036*PIR deactivation delay Signed 16 0 - 1 - 2 - 3 - 4 - 5 0: 5 min
1: 15 min
2: 30 min
3: 60 min
4: 90 min
5: 120 min
1
40038 /
40027**
Y1…Y4 output range Signed 16 0 - 1 - 2 0: 0…10 V
1: 2…10 V
2: 0…5 V
0
40039 /
40028**
Fixed control output Signed 16 0 - 1 - 2 - 3 - 4 - 5 0: OFF
1: 100%
2: 75%
3: 50%
4: 25%
5: 0%
0
40040 /
40029**
Fixed control output timer Signed 16 0 - 1 - 2 - 3 0: 6 h
1: 12 h
2: 24 h
3: Manual
1
*DETECT IAQ OCSa CO2-TEMP-MB
**DETECT IAQ Da CO2-TEMP-MB

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20220705 Swegon reserves the right to alter specications.
DETECT IAQ
Standards and directives
The following standards have been observed:
2014/30/EU Electromagnetic compatibility
(EMC).
2011/65/EU The Restriction of Hazardous
Substances Directive (RoHS2).
EN 61000-6-2:2006 Electromagnetic compatibility
(EMC) – Part 6-2: Generic stan-
dards - Immunity for industrial
environments.
EN 61000-6-3:2007/A1:2011 Electromagnetic compatibility
(EMC) – Part 6-3: Generic stan-
dards – Emissions from equip-
ment in homes, offices, shops
and similar environments.
Technical data
Power supply: 24 VAC/DC (22…28 V) < 2 VA
Output: 0…10 V / 2…10 V / 0…5 V,
< 2 mA
Screw terminals: 1.5 mm2
Cable gland: M16
(DETECT IAQ Da CO2-TEMP-MB)
Carbon dioxide measurement
Range of measurement: 0…2000 ppm
Accuracy (25°C): type ±40 ppm +3% from read value
(ABCLogic™)
Long-term stability/year: < 2% FS (ABCLogic™)
Time constant: < 2 min
Temperature measurement
Range of measurement: 0...50 °C
Accuracy (25°C): ±0.5°C
IP class
DETECT IAQa CO2-TEMP-MB/
DETECT IAQ OCSa CO2-TEMP-MB:
IP20
DETECT IAQ Da CO2-TEMP-MB: IP54
Operating conditions
Temperature: 0...+50°C
Humidity 0...85% RH, non-condensing